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' A. J. DONOVAN AND F. POKORNY, 1:.

METHOD OF ATOMIZING LIQUID- FUEL. APPLICATION FILED AUG.5, 1922.

Reissued Nov. 21-, 1922. I 15,493.

Reissued Nov. 21, 1922.

UNITED STATES Re. 15,493 PATENT OFFICE.

ARTHUR J. DONOVAN, OF ARDSLEY. AND FRANK POKORN'Y, J R., OF MAMARDNECK,NEW YORK, ASSIGNORS, BY DIRECT AND IVIESNE ASSIGNMENTS, 0F ONE-HALF TOSAID POKORNYAND ONE-HALF TO FRANCIS \V. KEEGAN OF NEW YORK, N. Y.

METHOD OF ATOMIZING LIQUID FUEL.

Original No. 1,290,523, dated January 7, 1919, Serial No. 229,909, filedApril 22, 1918. Application for reissue filed August 5, 1922.

To all whom it may concern:

Be it known that we, ARTHUR J. DONO- VAN and FRANK PoKoRNY, Jr.,citizens of the United States, and residents, respectively, of Ardsley,in the county of Westchester, and Mamaroneck, in the county ofWestchester, both in the State of New York have invented certain vnewand useful Improvements in Methods of Atomizing Liquid Fuel, of whichthe following is a clear and exact specification, reference being had tothe accompanying drawing, which forms a part of this application.

This invention relates to a method of atomizing liquid fuel, and ourpresent application, which is Division B of our application for reissuepatent, Serial No. 378,254,

' filed May 1, 1920, and is directed to the im pinging effect ofseparate streams of fuel mixture upon each other, to finely divide thefuel particles by the force in impaction thus provided, and in theconfluence of the two streams, to set up a state of intermixture betweenthe air and fuel most suitable for combustion.

The drawing represents, enlarged, a vertical sectional view of thedevice.

In the example of the mechanical device illustrated whereby our improvedmethod may be practiced we have shown the same structure as thatcomprised in our co-pending reissue application, previously referred to,which is in the form of a governor, and includes a passage connecting anengine intake 1 with a carbureter 2.

This divisional application is not concerned rimarily with the fuelmixture governing eatures of the structure represented in the drawing,and they will not therefore be described herein.

Those elements of the indicated structure which co-operate to performthe functions of this application include a piston element,

which serves as a supply throttle and consists of an annulus 16, havinga radial flange 17 at its lower portion, the periphery of said flangebeing slidable against the inner surface of portion 4 of the connectingpassage, in the movement of said annulus, whose outer surface ridesagainst the inner surface of a concentric member 18, in the functioningof said piston element.

Thus a chamber 19 is bounded by the an- Serial No. 579,953.

nulus 16, its flange 17, the portion 4 and the under surface of member18; said chamher being contractible and expansible with the movement ofsaid annulus. An orifice, as 20, through the annulus 16, permitsexhaustion of the chamber 19 under the aspiratory force of the motor,thus rendering said annulus responsive in movement to that influence.Normally the annulus 16 is seated upon a base, as21, which may form partof a choke device, here shown as a Venturi tube 22, connected, as byradial arms 23, with a threaded portion 24, screwed into portion 4. Whenthe annulus is seated, as stated, the spaces between the arms 23 arethereby covered and fuel mixture can then only be drawn through theventuri, flowing thus in restricted quantity, as for motor idlingpurposes; but when the annulus has been lifted up, then additional fuelpassage is available through the spaces between the arms 23, and betweenthe outer surface of the Venturi tube and the under surface of theannulus 16, the extent and capacity of the passage varying according tothe degree to which the annulus is raised.

With the lift of supply throttle 16 fuel mixture is caused to flowbetween the inclined surface 25 of said supply throttle and the outerwall of the venturi, this fluid flow being accorded a convergentdirection by the inward and upward angle of said inclined surface 25, sothat in fact the volume of fluid enters the passage in conoidal form.Since at the same time fuel mixture is also flowing, under the samesuction influence created by the engine in its aspiratory operation,through the axial orifice of the venturi, it follows that the twoseparate volumes of fluid admitted to the passage enter into impingingrelation which results in a fuel pulverizing action, whereby the fullparticles in each volume become more finely subdivided and all areintimately intermingled in and dispersed throughout the combined volumesto constitute a highly combustible mixture. Also,

due to the outwardly flared form of thetwo volumes of fluid, therebyenhancing the value of the bombardment between the fluid streams intheir fuel pulverizing and mixture making characteristics. 7

Variations ithin the spirit and scope of our invention are equallycomprehended by the foregoing disclosure.

We claim:

The method of providing a continuous flow of fuel mixture to the intakemanifold of an internal combustion engine, which consists in thecreation of a central, diverging flow of said mixture, and also aconcentric, converging flow of said ,mixture, and causing said flows ofmixture to enter into impinging relation, whereby a fuel pulverizing andmingling effect is produced between said flows of "fluid mixture. H

Signed at White Plains, in the county of Westchester and State of NewYork, this 20 29th day of July, 1922.

ARTHUR J. DONOVAN. 1 s11 FRANK POKORNY, R. [n 8.

